When using 2-way communication between 2 RF modules, it is very useful to be able to detect loss of communication between the modules. Especially with remote sensing applications, you don't want to ...

// A simple transmitter sketch that initializes the nRF24L01+, opens a writing pipe, and sends a "Hello World" packet once per second while printing transmission ...

// A basic receiver sketch that initializes the nRF24L01+, opens a reading pipe, listens for incoming packets, and prints received text to Serial when available ...